This recording-medium conveying device comprises a conveying belt, the conveying belt, a belt charging unit, and a pressing roller. The conveying belt is wound around a driving roller and a driven roller so as to convey a recording medium to an image recording part. The conveying belt includes an insulating layer formed at one side contacting the recording medium. The belt charging unit is provided in contact with the insulating layer so as to charge the insulating layer with a positive charge and a negative charge alternately in a moving direction of the conveying belt by applying an AC bias to the conveying belt. The pressing roller presses the conveying belt against the driving roller so as to prevent the conveying belt from slipping on the driving roller.
This application is a Rule 1.53(b) continuation, and claims the priority, of U.S. Ser. No. 10/092,701, filed Mar. 7, 2002 now U.S. Pat. No. 6,786,590, the entire contents of which is herein incorporated by reference.
Priority Data
Mar 09, 2001 [JP] 2001-065926 Jul 23, 2001 [JP] 2001-221049 Dec 21, 2001 [JP] 2001-388792
An image forming apparatus can form a high-quality image while acquiring a stable conveyance performance. A conveyance belt (21) conveys a recording medium (12) by attracting the recording medium (12) by an electrostatic force. A recording head (7) discharges liquid droplets toward the recording medium (12) being conveyed by the conveyance belt (21). Alternating positive and negative electric charges are applied onto the conveyance belt (21). A conveyance speed is controlled in accordance with a charge period length of the alternating positive and negative electric charges applied onto the conveyance belt (21).
